And despite the Glory's late season rally to charge into the grand final, Tactics Room analyst Ciaran Baynes can't see the Roar being beaten.

The Glory gave the Mariners numerous scoring opportunities last week before eventually winning a grand final berth via a penalty shoot out.

If the Glory again give their opposition scoring opportunities, Brisbane will punish them.

"I'd like to say it will be a close game on Sunday but the truth is it shouldn't be,'' Baynes said.

The Roar lost 2-1 to South Korean side Ulsan Hyundai on Tuesday night but the short turnaround is unlikely to affect the defending champions ahead of Sunday's A-League decider.

Brisbane playmaker Thomas Broich was disappointing against Ulsan and will be looking to make amends against a wary Glory defence.

And after Roar coach Ange Postecoglou labelled his team's performance "cowardly" when the Roar drew 3-3 with the Glory in Perth last January, Brisbane will be primed for a ruthless performance in front of 50,000 fans.